Heat exchange – With alarm – indicator – signal – register – recorder – test or... – Remotely controlled inspection means
Patent
1993-06-02
1994-04-26
Ford, John K.
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
Remotely controlled inspection means
165 21, 165 29, 62160, 62173, 621766, 62181, 62229, 622387, 62296, 236 44C, F25B 2900, F25B 1300
Patent
active
053058224
ABSTRACT:
An electric expansion valve is arranged between a first indoor heat exchanger and a second indoor heat exchanger. At a time of cooling operation, the electric expansion valve is fully opened to connect both the indoor heat exchangers to each other. At a time of dehumidifying operation the electric expansion valve is narrowed to apply a pressure reducing action across these indoor heat exchangers so that the first indoor heat exchanger acts as a reheater and the second indoor heat exchanger as an evaporator. The indoor air is cooled and dehumidified by the second heat exchanger and then reheated by the first indoor heat exchanger and blown into the room. At a time of dehumidifying operation, the temperature of the air blown into the room varies by controlling the speed of an outdoor fan. When the outdoor fan is rendered from an OFF to an ON state or from the ON to the OFF state, the opening extent of the electric expansion valve is set first to an initial opening level and then gradually varied to a target opening level. By so doing, it is possible to prevent refrigerant noise at the electric expansion valve.
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Fukunaga Hidetoshi
Kogetsu Katsumi
Kuroyanagi Hiroaki
Sato Takeshi
Sukegawa Naozumi
Ford John K.
Kabushiki Kaisha Toshiba
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